. >>> nbc's "meet the press" moderator david gregory is being investigated by washington, d.c. police. cops want to know if he violated d.c. gun laws. the reason is this exchange sunday between gregory and the executive vice president of the national rifle association, wayne lapierre. watch. >> here is a magazine for ammunition that carries 30 bullets. isn't it possible that if we got rid of these, if we replace them and said, you can only have a magazine that carries five bullets or ten bullets, isn't it just possible that we could reduce the carnage in a situation like newtown. >> i don't believe that's going to make one difference. >> police want to know whether the 30-round magazine gregory displayed was real or fake. because possessing a large capacity ammunition device is illegal in the district of columbia, where nbc studios are located. even if it is not attached to the weapon. now, police department spokesperson said nbc asked if it could use the high capacity magazine on air, and it was told no. the network has not responded to cnn's request for comment. >>> next, cel